SB20261023229 - Use-after-free in Linux kernel edac driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-98932)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to potentially cause a denial of service.

The vulnerability exists due to a use-after-free in the Linux kernel Altera EDAC driver's altr_edac_a10_device_add() and altr_portb_setup() functions when error-path cleanup frees the dci structure before unregistering managed interrupt handlers. A local user can potentially exploit an interrupt occurring during this cleanup window to cause a handler to dereference freed memory, potentially crashing the kernel.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/865f3bdebbc9b34012358c377c9b15154f95f33b
• https://git.kernel.org/stable/c/87364b19b3fe4e6dbf88d6acf6db4ec87e7dfbba
• https://git.kernel.org/stable/c/eef3b67f9c6782127163b631c9043011a68016e2